The answer is (A. Afghanistan).
Variations in air pressure from place to place are the principal cause of wind.
Answer: the main purpouse of physical maps usually show the most important political boundaries, such as state and country boundaries. So, this is true.
Explanation:
Yes you do get it but u have to type www.bitesize.co.uk
Answer:
Seismic and the Earth. they came. Geologists use these records to establish the structure of Earth's interior. The two principal types of seismic waves are P-waves (pressure; goes through liquid and solid) and S-waves (shear or secondary; goes only through solid - not through liquid).
